Réponse :
Explications étape par étape
Bonsoir
44/11+32/10+63/7
= (11 x 4)/11 + (16 x 2)/(5 x 2) + (9 x 7)/7
= 4 + 16/5 + 9
= 13 + 16/5
= 65/5 + 16/5
= 81/5
7/10+1/4+39/13-75/25
= 7/10 + 1/4 + (3 x 13)/13 - (25 x 3)/25
= 7/10 + 1/4 + 3 - 3
= 28/40 + 10/40
= 38/40
= 19/20
3/4+5/7+2/3+1/4+2/7+1/3
= 3/4 + 1/4 + 5/7 + 2/7 + 2/3 + 1/3
= 4/4 + 7/7 + 3/3
= 1 + 1 + 1
= 3
